Water-closet-flushing tank.



F. E. SHAW;

WATER CLOSET FLUSHING TANK..

APPLICATION FILED suuna. 1912.

awwm foz Daniel/K Shaw nivrrn erase ATNT rains.

FRANK E. SHAW, 0F COLUMBUS, QHIO, ASSIGNOR 0F ONE-HALFTO CECIL Hi. KERNS, OF

COLUMBUS, OHIO. l

WATER-CLOSET-FLUSHING TANK.

To all whom it may concern Be it known that I, FRANK E. SHAW, a,

and useful Improvement in lVater-Closet Flushing Tanks, of which the following is a specification.

The invention relates more particularly to that type of flushing tanks in which the siphon is employedas an element; and the object of the invention is to provide a simplified and economical construction which is not so prone to get out of order as those heretofore in use.

The invention is embodied in the example illustrated in the accompanying drawing and set forth in the following description, the features of novelty being finally claimed.

In said drawing-- 1 Figure l is a vertical longitudinal sectional view of the tank showing the interior details partly in elevation and partly in seotion.

Fig. 2 is a top plan view with'the cover removed.

Tn the views 5 designates the tank and 5 its cover, both being of usual or any suitable construction.

6 designates the siphon, which has its longer leg connected with the bottom of the tank and its shorter leg provided at its entrance with an enlarged portion or chamber 7 containing a valve seat 8 upon which normally seats a gravity valve 9. The said enlarged portion practically forms a part of the shorter or inlet leg of the siphon and the valve is located Within said leg and is operated directly by gravity to close the passage to the leg. The valve 9 has a stem 10 that projects below the entrance to the siphon and is guided in the central portion 11 of a spider subtending the opening to the siphon. The stem of the valve has a cross pin ll o limit the movement of the valve off its seat. 12 designates a vertically sliding lifter rod having an arm 19. extending to a point below the lower end of the valve stem 10. This rod 12 is in turn actuated by a rod 14 attached to a crank arm 15 on the inner end of a shaft 16. The outer end of the shaft 16 extends beyond the tank where it is provided with a crank arm 17 and pull handle 18 by means of which the lifter rod 12 and its arm 13 can be raised at will to Specification of Letters Patent.

unseat the valve 9. The valve 9 is so far Patented Apr. 9,1918. Application filed July 13, 1917. Serial No. 180,306.

weighted that it will resist the lifting tendency of the desired head of water above the bend of the siphon and remain on its seat until actuated by the lifter rod.

The level of the water to be maintained-in thetank is controlled by the usual valve at 19 to admit and shut 0d the supply, said valve being provided with the usual lever 20 and float 21. After discharge the tank is refilled as usual by the opening of the valve at 19 but in the present instance the float 21 is so located as to permit or cause said valve to close and cut ofi the supply only when the water has reached a level somewhat above the upper end of the siphon so as to insure a good head of water and ample pressure in the siphon when'its ac tion is initiated.

In practice the siphonic action is initiated and automatically established by pulling down on the handle 18 and thereby lifting the valve 9 0H -its seat. Siphonic action is thus simply initiated because the siphon is completely submerged and the head of Water in the tank is sufficient to fill the short leg and cause a flow through the long leg into the closet bowl. The siphonic action having been, established it continues to operate, as well understood. until the water in the tank reaches the level of the inlet end of the siphon'or, as preferred by me in practice, nearly thereto at which time the valve 9 falls by gravity on its seat and closes the siphon. The time at which the siphonic action ceases is somewhat dependent upon the weight and form of the valve which, according to my invention. are preferably made such that it is held off its seat by the flow of water into the siphon until the water level reaches a point somewhat above the inlet but below the bend of the siphon so that the weight of the valve is greater than the pressure of the water head on it and the valve will. drop by gravity. Practically in this case the valve is submergent with reference to a level of the then surrounding Water in the tank. In this way the gurgling noises incident the breaking of the siphon and clatter of the valve are avoided or absorbed or smothered by the surrounding Water. At the time of the closing of the valve or the breaking of the siphon the Water in the long 7 therein, a valve for opening and closing the inlet leg ofthe siphon, said valve being actuated clirectlyby gravity to close the same, means operative at Wlll to actuate said valve to open saiclinlet leg,1neans for automati- Gopies of thispa'cent may be obtained for cally refilling the tank and for maintaining a head of Water in the tank suiiicientto" submerge the siphon.

2. A Water closet flushing apparatus comprising", in combination, a tank, a siphon therein, a valvefor opening and closingthe inlet leg of the siphon, means operative at will to actuate said valve to open said inlet leg, means for automatically refilling the tank and for maintaining a head of Water in the tank sufficient t submerge-the siphon, said valve being of sufiicient'aveight toclose the siphon intake when the level of the Water in the tank is lowered to a plane below the bend of the siphon.

FRANK E. SHAl/V five cents each, by addressing the Commissioner of Patents,

Washington, D. (2.. 

